<!DOCTYPE html>
<html>
	<frameset rows="20%,*,20%">
		<frame name="topF" src="https://www.baidu.com" />
		<frameset cols="230px,*">
			<frame name="leftF" src="left_page.html"/>
			<frame name="rightF" />
		</frameset>
		<frame name="bottomF" />
	</frameset>

</html>